One may designate any room or crudely constructed booth as a "jack shack." The most effective procedure for establishing a jack shack is to (1) ensure no other function has been assigned to the space; (2) make a sign that says "jack shack"; (3) make a flippable sign that reads "vacant" on one side and "jerkin' it" on the other; (4) hang the signs; (5) jerk it.